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        //数组结构
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        // let b = arr[1];
        // let c = arr[2];

        // let [a,b,c] = arr;

        // console.log(a,b,c);

        // const person = {
        //     name: "jack",
        //     age:21,
        //     language:["java","js","css"]
        // }

        // // const name = person.name;
        // // console.log(name);
        // //对象解构
        // const {name:abd,age,language} = person;
        // console.log(abd);



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